Series 442, Cast Iron Body, Valve and Level Control

The INVALCO Diatroller is a combination liquid level controller and liquid valve. Closed, the force of the weighted rod on top exceeds the liquid pressure under the valve diaphragm. As the liquid level rises in the vessel, the increased head pressure raises the diaphragm, opening the valve. Gas from the top of pressure vessels is piped to the valve diaphragm’s top side to equalize pressure.


Body MaterialCast Iron, A-126
Body Cover MaterialCast Iron, A-126
End Connections2″ FNPT Threaded; 3″, 4″ Class 125# FF Flanges.
Diaphragm MaterialNylon Reinforced Buna N Diaphragm
Maximum Differential Operating Pressure125 psi
Temperature Limits-20°F to 250°F
Plug TypeReplaceable, Buna N
Seat TypeRemovable, Cast Iron
Other Wetted Parts303 Stainless


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